What Do Your Spark Plugs Do

Spark Plugs

The Ultimate Guide to Spark Plugs

Your spark plugs are essential to the running of your car. They provide a small ignition source to your car’s engine, allowing the fuel to ignite and drive your car’s pistons. Spark plugs are the diligent worker that starts up your car, time after time. But how exactly do your spark plugs work? What are the signs of their failure, and what are their lifespan?

Your Spark Plugs

Your engine runs on a mixture of fuel and air that is injected into the ignition chamber by the fuel nozzle. These materials then combust (you can think of this like a small explosion, or a fire), or burn. After the first ignition, a chain reaction occurs; the first small explosion drives the next, and so on. However, the first ignition needs a source to begin the chain reaction, and your spark plugs are this source - it drives a small spark across a gap in your engine to start your chain reaction.

How long do your Spark Plugs Last?

Your spark plugs, thankfully, are one of the most durable parts of your engine, as they are housed in the ignition chamber, right in the middle of your engine block. Spark plugs are typically replaced 50,000km to 80,000 km, given proper engine conditions, however, the spark plugs in newer cars can last even longer. Most new cars also come with a lifetime warranty on spark plugs.

What are the signs of wearing spark plugs?

There are a few main signs of failing or malfunctioning spark plugs that you may be able to notice. Of course, if your spark plugs are completely dysfunctional, your car will not be able to start, however, there are many other signs of partial failure:

Sub-optimal fuel consumption

If your fuel consumption suddenly increases, it may be a sign of a malfunctioning spark plug. Your spark plugs help your car regulate itself, and increased mileage can be a symptom.

Slower Acceleration

Your spark plugs send additional ignition sparks to your engine when your car is accelerating, and if your car is malfunctioning, your car’s acceleration can be adversely impacted. If your car is responding more sluggishly, or accelerating slower, it may be a symptom of malfunctioning spark plugs.

Engine Misfiring

When your engine misfires, it is typically because of an issue with your car’s ignition system - the spark may have came late, or the spark may have been too large. These issues may come from a malfunctioning set of spark plugs.

If your car is experiencing one of all of these symptoms, chances are your spark plugs are malfunctioning. Fiix performs spark plug replacements, and can help diagnose problems with your car. Call us at 647-461-4449 or book online at www.fiix.io today!

Related articles

What's The Difference In Gas Level Types

The 3 Signs Of Misaligned Wheels

How To Fix A Broken Odometer

Volvo's Overseas Delivery Program

What To Do If Your Engine Is Overheating

Signs Of Your Engine Running Lean

Extend your car's life. Get car advice straight to your inbox.

Join 5000+ car owners and keep your car in its healthiest form.

More Related Articles

5 Tips For Extending Your Car's Lifespan

5 Tips For Extending Your Car's Lifespan

Everyone has a that one friend whose 1998 Civic still runs like it’s brand new. But how does he do it? And how can you? By following these 5 tips, you’ll spend less on repairs, and get the longest life from your car.

Read more

How to Change a Tire

How to Change a Tire

At Fiix, we help make people’s lives more convenient every day by providing expert mechanics at the click of a button, but we also want to help your repair your own vehicle — all of our mechanics will walk you through the process and show you how it’s done.

Read more

The Symptoms of a Failing Timing Belt

The Symptoms of a Failing Timing Belt

Your timing belt is an essential component of your engine. It is a belt that connects your crankshaft to the pistons that move your engine, and allows your engine to sync up its movements - it’s named after the fact it syncs the opening and closing of your engine valves to the movements of the pistons.

Read more